64424042446 has 8 divisors (see below), whose sum is σ = 96763051584. Its totient is φ = 32169691920.

The previous prime is 64424042443. The next prime is 64424042461.

It is a happy number.

64424042446 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64424042399 and 64424042408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64424042443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21162750 + ... + 21165793.

It is an arithmetic number, because the mean of its divisors is an integer number (12095381448).

Almost surely, 2^64424042446 is an apocalyptic number.

64424042446 is a deficient number, since it is larger than the sum of its proper divisors (32339009138).

64424042446 is a wasteful number, since it uses less digits than its factorization.

64424042446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42329306.

The product of its (nonzero) digits is 589824, while the sum is 40.

It can be divided in two parts, 644240 and 42446, that added together give a palindrome (686686).

The spelling of 64424042446 in words is "sixty-four billion, four hundred twenty-four million, forty-two thousand, four hundred forty-six".